US1210090A

US1210090A - Pipe-joint.

Info

Publication number: US1210090A
Application number: US6905715A
Authority: US
Inventors: Lorenzo O Markham
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-12-28
Filing date: 1915-12-28
Publication date: 1916-12-26
Anticipated expiration: 1933-12-26

Description

L. 0. MARKHAM.

PIPE JOINT.

APPLICATION FILED DEC. 28, 1915.

1 ,21 0,090. Patented Dec. 26, 1916.

L /l V 7 i m 4 I v a 1 13 Z 5 6%5 4' a a 4 WITNESSES: INVENTOR 1 1 11 J! 77 Z LaM aF kha/Tn/ n i v I 7 I Z Attorney.

tinrn srntrs arnrir risen,

Lonnnao o. meanness, or ennnnnnn, wesnmeron'.

PIPE-JQINT.

Specification of Letters Patent Patented D086, 26, ll lifio tlontinuation in part of application Serial Ito. 1,770, filed March t, 1915. This application filed December 23, 1915. Seria1 No.69,05?.

To all cultom it may concern: 4

Be it lgnown that l, Lorenzo U. MARK- nema citizen of the United Statesresida ing at Aberdeen, in the county of Grays Harbor and State of Washington, have in-- which was allowed June 29, 1915.

' ,An object is to provide 'a pipe joint by means of which lengths of pipe may be connected together or disconnected from each otherwith the greatest facility without the necessity of tools, and when connected will produce a fluid tight joint.

in places whereit is customary to employ long lengths of pipe and to drag gsuch lengths of pipe through underbrush and the like, it has heretofore been customary to' employ ordinary straight couplings and or-. dmary unions wh1ch, 1n the case of unions,

require packing, and moreover, require the may be easily operated by the fingers to release and lock the members, as is desired.

use of such tools'as wrenches. V l y In accordance with the present invention the pipe joint is made of two matching sections with the meeting ends beveled with respect to the longitudinal axis of the joint,

' While adjacent, to the meeting ends the re spective members of the joint are provided -with tongue and groove connections which may go together on a line perpendicular to the longitudinal axis of the joint. This per- 'jmits the use of. accurately ground surfaces where the joined ends meet, so that with the aid of a gasket the joint becomes fluid tight, and as water is the usual fluid empl'oyed, the joint may be saidto be water tight. l

To avoid sharpcorners or projections and excessive diameter in one direction, the joint where the two sections meet is made elliptical in cross-section with the longer axis of the ellipse coincident with the path of move ment of the two parts into and out of en gagement. Because of its elliptical form,

which because of'its rounded contour, avoids any interference with movements of the pipe through under-brush and the like, the passage through the pipe joint is, where the meeting surfaces engage, also made elliptieal, so that its cross-sectional area at such point is as large-as at the ends where the passage through the pipe joint is circular in cross-section. I v I Since the meetingedges of the two members of the pipejoint, where beveled, may be made of relatively large area, and of larger area than the tongue and groove connections, especially in the absence of any projecting parts, and since the angle of bevel or inclination may be relatively slight, the

vide therelatively laterally movable mem-' bers with a. latch, .which is counter-sunk in theouter faces of the members, and which This feature of the invention contemplates the provision of an improved spring means the latch in either locked on for retaining released pos1tion-,*and for maintaining the latch in true longitudinal alinement with the members-and the peculiar mounting of the sprin means.

A further feature of the present.invention is in the provision of a packing gasket-or ring which is peculiarly mounted in one of the ground faces of the coupling, the ring being held within the face and being permitted to expand at its outer end or face,

so as to insure the sealing ofthe coupling.

The invention will be best understood from a consideration of the following detailed description, taken in connection with the accompanying drawings forming a part of this specification. with the further understanding that While the drawingsshow a practical form of the invention, the latter is not confined to any strict conformity with the showing of the drawings, but may be changed and modified so long as such changes and modifications mark no materialdeparture fromthe salient features of the invention V,

In the drawings: Figure 1 is an elevation of the pipe joint. Fig. 2 is an elevation of the pipe joint as seen from a point of view at right angles to that of Fig. 1.-

Fig. 3 is a view similar to Fig. 2 with one member of the pipe joint in longitudinal diametric section. Fig. 4 is a longitudinal diametric section through the pipe oint and adjacent ends of pipes connected thereby, the plane of the section being at right angles to that of Fig. 3. Figs. 5 and 6 are end elevations of the respective members of the pipe joint. Fig. 7 is an enlarged sectional fragmentary view of the inner end of the locking latch and retaining means therefor. Fig. 8 isan enlarged sectional view of the same, taken at right angles to the showing in Fig. 7. Fig. 9 is an enlarged fragmen tary sectional view ofone of the coupling members, showing. the packing mounted therein, and being compressed. Fig. 10 is a fragmentary sectional view of the coupling member with the packing ring therein, showing the outstanding position of the same when released and expanded.

Referring to the drawings, there is shown a pipe joint comprising two

members

1 and 2. The member 1 has one end 3 interiorly tapped for the reception of the threaded end ofa pipe 4, and the member 2 has one end 5 interiorly tapped for the reception of the threaded end of a pipe 5*.

That end of the joint member 1 remote from the tapped end 3 is of elliptical crosssection with the outer end face 6 slightly inclined or beveled with respect to a diametric plane perpendicular to the longitudinal axis of themember 1.

The,pipe member 1 adjacent to the bevel edge 6 and on opposite sides of the long diameter of the elliptically formed'end is narrowed along the shorter diameter to form laterally extended faces 7 in substantially chord relation to the circumferential portion of the'elliptical end, and between these faces 7 and the bo-dyoi the member 1, at the side of eachface .7 remote from the bevel edge 6, there is produced-agroove 8 parallel with a corresponding long diameter of the ellipticalend.

The coupling member 2, at the end remote from the end 5, is also of elliptical cross-section similar to that of the member 1 and terminates in an'end face 9 correspondingly beveled to the bevel of the face 6 of the member 1.

lengthwise of the member 1 are two-wings ing groove 8 in the member 1. The spacing apart of the inner walls of the projections 'or wings 10, which-inner walls are in parallel relation and are indicated at 12, is such Extending from the face 9* remote as to receive between them the portions of the member 1 having the faces 7, which faces are broader in the direction of the length of the member 1 than is the'width of each groove 8 in the same direction.

Extending lengthwise through the meme beer 1 is a central passage 13, and extending lengthwise through the member 2 is a similar lengthwise passage 1d. The passage 13 where approaching the surface 6 is narrowed in the direction of the shorter axis of the ellipse and elongated in the direction of the longer axis of the ellipse to form an elliptical mouth portion 15 in general conformity to the elliptical shape of the end of the coupling member 1 terminating in the surface 6. The passage 14 has a similarly shaped mouth 16 matching the mouth 15 when the coupling members are in proper engagement. Owing to the narrowing of the beveled faces of the coupling members where meeting, due

to the elliptical form of such ends of the coupling members, a passage of even diameter straight through the coupling would render the walls at these meeting edges unreasonably thin, but there is ample thickness of metal in the direction of the long axis of the ellipse. For this reason the

mouth openings

15 and 16 are elongated in the direction of such long'axisto provide passage areas at these points equal to the cross-sectional area of the round orcylindrical portion of the passages where the pipes i and 5 are connected to the coupling members. l

In one of the end faces, which are beveled and meet when the coupling members are interlocked, preferably the end face 9, there is seated a gasket or packing ring 15. As may be best seen from Fig; 9 of the drawings, a dove-tailed groove 16* is formed in the face 9 to receive and retain therein the packing ringer gasket 15. The outer opposite edges of the dove-tailed groove 16 are beveled, as at 17, to admit of the spreading or flaring of the outer edge or face of the gasket 15 to seal the joint between the

faces

6 and 9. lit is, of course, understooodd that this packing ring 15, and this retaining dove-tailed groove 16 extend annularly about the central openingli in the member 2, and are equally spaced at all sides of the member 2 from the inner wall of the same.

' Tt may be found convenient to provide means for securing the

members

1 and 2 together when they are interlocked, so as to prevent them from sliding sidewise or lat pivot pin 19, preferably in the form of a screw or bolt, which is suitably countersunk in the side of the member 11, passing in the direction of a chord through the mem- V urged upwardly against the heel of the latch till her 1, and being held in position by a counter-sunk nut 20, or the like, which engages in threaded relation with the outer end of the bolt 19. The latch lever 18 lies in a recess 21 formed longitudinally in the side of the member 1, and has its inner end apertured and disposed in the longitudinal plane of the bolt 19, so as to pivotally mount the latch lever. on the bolt and admit of the free rotation of the lever. As shown in Figs. 1, 2 and 41, the latch lever 18 is'swung down into locked position and wherein its outer end or nose 22 lies in a recess or notch 23 formed in the opposite member 2, and in longitudinal alinement with the recess 21 in themember 1. When the members are brought into alihement by their relative lateral sliding movement, and the members are entirely closed, the

recesses

21 and 23 are brought into longitudinal registry. The latch lever 18 may now be swung down or inwardly into these registering recesses to engage the opposite walls thereof, and thus hold the

members

1 and 2 from lateral displacement with respect to each other. When the latch lever 18 is swung down, it lies flush with the outer surfaceof the coupling,

so as to prevent any obtruding. parts which are liable to catch in surrounding objects to injure the coupling or the objects with which they engage. a

r The presentinvention also includes means for yieldingly holding this latch lever in locked position, or for holding it in released position, so that he members. may be separated without being hampered by the latch lever. This means comprises a helical spring 2 1, seated in a pocket 25 formed immediately beneath the pivotal support or heel of the latch 18, and immediately beneath the pivot bolt 19. A cap or disk 26 is fitted in the pocket or recess 25, which latter is of interior cross-sectional configuration, preferably conforming to the contour of the disk or cap 26,-so as to" guide the latter in its vertical movement-under the action of the spring at. The disk or cap 26 is normally 18, so as to normally exert a spring. tension on' the latch 18 to hold it in its locked position, or in its released position when swung over to engage the upper edge or side of the latch with the disk26. From Figs. 7 and 8, it will be noted that the upper face of the ,cap or disk 26 is providedwith a diametrically extending groove or recess 27 of a width sufficient to receive the lower edge of the latch lever 18-therein for the purpose of holding the disk 26 from turning upon the upper end of the spring 24:, and also for the purpose of centering the latch lever 18 The faces 6 and 9 are ground into con-c formity one with the other, so that when one member of the coupling is moved into engagement with the other by engaging the tongues 11 in the grooves 8. this movement is performed with ease until'finally the beveled edges 6 and Q are brought into contact. The parts are so proportioned that this contact occurs just before one coupling memher is in full alinement with the other. N ow, by the aid of a hammer or some other driving means by which a blow may be given to one side of the coupling in line with the direction of movement of the coupling members when engaging, these coupling members are forcibly moved into full alinement where the friction of the faces'6 and 9, and the friction of the tongues 11 in the grooves 8. firmly hold the two members of the coupling in engagement against all ordinary forces tending to separate them. The faces 6 and 9 present relatively large surfaces so that when they are once in frictional, engagement a considerably greater force than that to which the coupling members are subjected when in use is necessary to cause a disengaging movement of the coupling members with relation to each other.

When the coupling is used in locations where the pipe is dragged over the ground and through brush and thelike, all sharp corners or projections must be avoided, and with the present invention are avoided, the coupling members where joining having their exteriors in the form of gentle curves extending lengthwise of the coupling with no sharp corners liable to catch upon any thing. The coupling of the present invention is most readily connected and disconnected, has no loose gaskets or other means liable tobe misplaced or lost, and when put together provides a water tight joint having no liability of accidental separation, and, moreover, the full capacity of the water pipe is provided through the coupling by reason of the elliptical form of the mouth of the passage through the coupling at the meeting ends of the coupling members.

Uf course, it will be understood that instead of connecting pipes 4 and 5*"as shown, the'coupling may be provided with any other kinds of connecting pipes, whether metallic pipes, or hose or the like, but as any of a great variety of such pipes may be employed, it is not deemed necessary. to

its

with or without the locking feature, but it is found particularly desirable to use the locking device when the coupling is used as a hose coupling. in Fig. of the drawings, it is clearly shown that when the packing ring is released, when the

coupling members

1 and 2 are disconnected, the outer edge of the ring projects substantially one-sixteenth of an inch, beyond the abutting face 9 of the member 2, which carries the ring. In other words, the packing springs out of the beveled portions of the face 9 at the opposite sides of the re cess 16 the beveled portions 17 admitting of the expansion or spreading of the packing ring .When the

members

1 and 2 are brought together into tight fitting engagement. This latter spreading of the packin rin 15 is shown to advanta e in Fi 10. .The improved coupling provides for a ground joint, and at the same time a gasket joint, so that the coupling may withstand considerable wear, and maintain considerable pressure without leakage. It is within the spirit of this invention to change the design and arrangement of the several elements which go to make up the coupling and the latch means therefor, as far as the scope of the following claims permit, in order to adapt the coupling to the various uses towhich it may be applied, and in order to interchange the latch mechanism or gasket packing'which is de scribed above ashaving a certain specific location.

What is claimed is 1. A pipe coupling comprising two members having tongue and groove connections extending laterallyo of the length of the coupling with the meeting ends of the coupling beveled with respect to the direction of movement of the. coupling members toconducting passages through the coupling members of elliptical form at the meeting, ends of said members to provide a cross-secevide a receive the heel of said latch.

tional area as great as that at the outer ends of these members.

2. A pipe coupling comprising two members having tongue and groove connections extending laterally of the length of the coupling with the meeting ends of the coupling beveled with respect to the direction of movement of the coupling members together and with the meeting faces gipund to provide a fluid tight joint, one of said meeting faces having a dove-tailed annular groove therein, which is flared at'its outer side, a gasket fitted in the dove-tailed groove and adapted to be compressedbetween said faces, and to expand in the flared outer side of the groove to seal the joint, said coupling being of elliptical cross-seetion at the meeting ends of its members, and

with the fluid conducting passages through the coupling members of elliptical form at the meeting ends of said members, to procross-sectional area as great as that at the outer ends of these members.

3. In a pipe coupling including two members having tongue and groove connections extending laterallv of the length of the coupling, a latch pivotally mounted in countersunk relation in the side of one ofthe members, said member having a pocket beneath the pivoted end of said latch and having a recess extending longitudinally ofthe latch, the opposite member having a corresponding recess in its outer face in registry with the first recess to receive the outer end of said latch when the members are coupled, whereby the latch spans the tongue and groove connection, a springin said pocket,

and a cap mounted on the outer end of the spring for mo vement in the pocket, and provided with a recess in its upper face to In testimony, that I claim the foregoin as my own, I have hereto afixed my signa-- ture in the presence of two witnesses LORENZO O. MARKHAM.

lVitnesses: 1 I

Louis H; Um, Same B. Sharron,